| 摘要 |
<p>Disclosed are a method and apparatus for preventing runaway of CPU using a battery voltage as a power source voltage, in which the operation of CPU and the power source voltage of CPU are inspected at the abnormal operation of CPU and/or at the abnormal reduction of the power source voltage of CPU, system resetting is effected on CPU, system reset signals for CPU are counted, and when the count number of system reset signals for a predetermined time satisfies predetermined conditions, it is judged that CPU is in failure, and when the abnormal reduction of the power source voltage of CPU is detected, the counting of system reset signals is prohibited.</p> |
